Interesting observation. I really need to get them both out in the sun and get out a real camera. The mx5 has super high quality ceramic tint that is 20%. The cx5 has a middle of the road ceramic tint, also 20%.
I will get headlight shots this weekend. I drove it in the dark for the first time tonight. I had not even realized it had the moving/swivel headlights like the mx5. Pretty cool.
The 4C is a fun car. I am an Italian car guy through and through so the introduction of a mass market, affordable Italian did my heart good. It is 3/4 of the car compared to a few of its garage mates but it cost 1/5 of what they did. That is cool. My Alfa has the euro compulsion ecu which is a direct replacement and is a must have. As for quirks, nothing that I consider a negative. Problem free. I have had it a year and done about 800 miles. No issues.